package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.User;
import com.itheima.reggie.service.UserService;
import com.itheima.reggie.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.RandomStringUtils;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RedisTemplate redisTemplate;

    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession httpSession) {
        //获取手机号
        String phone = user.getPhone();
        //如果验证码已发送,禁止再次发送
        if (redisTemplate.hasKey(phone)){
            return R.error("验证码已发送,请勿多次操作");
        }
        //如果手机号不为空,生成验证码
        if (StringUtils.isNotEmpty(phone)) {
            //生成随机的4位验证码
//            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            String code = "1234";
            log.info("code={}", code);
            //需要将生成的验证码保存到Session
            //httpSession.setAttribute(phone, code);
            //优化 将生成的验证码保存到Redis中
            redisTemplate.opsForValue().set(phone, code, 5, TimeUnit.MINUTES);

            return R.success("短信验证发送成功");
        }
        return R.error("短信发送失败");
    }

    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session) {
        log.info(map.toString());
        //获取手机号
        String phone = map.get("phone").toString();
        //获取验证码
        String code = map.get("code").toString();
        //从Session中获取保存的验证码
        //Object codeInSession = session.getAttribute(phone);
        Object codeInSession = redisTemplate.opsForValue().get(phone);

        if (codeInSession == null || !codeInSession.equals(code)) {
            return R.error("登录失败");
        }

        //进行验证码的比对（页面提交的验证码和Session中保存的验证码比对）
        //如果能够比对成功，说明登录成功
        LambdaQueryWrapper<User> lqw = new LambdaQueryWrapper<>();
        lqw.eq(User::getPhone, phone);
        User user = userService.getOne(lqw);
        if (user == null) {
            //判断当前手机号对应的用户是否为新用户,如果是新用户就自动完成注册
            user = new User();
            user.setPhone(phone);
            user.setStatus(1);
            user.setName(RandomStringUtils.random(4));
            userService.save(user);
        }
        //登录成功后,删除验证码
        redisTemplate.delete(phone);
        session.setAttribute("user", user.getId());
        return R.success(user);

    }

    @PostMapping("/loginout")
    public R<String> loginout(HttpSession session) {
        session.setAttribute("userId", "");
        return R.success("登出成功");
    }
}
